Annals of Oncology Advance Access originally published online on October 11, 2005
Annals of Oncology 2005 16(12):1974-1978; doi:10.1093/annonc/mdi409
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© 2005 European Society for Medical Oncology
Pharmacokinetics and efficacy of ifosfamide or trofosfamide in patients with intraocular lymphoma
Departments of 1 Haematology, Oncology and Transfusion Medicine, 3 Ophthalmology and 4 General Pathology, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Berlin; 2 Department of Internal Medicine, Medical University of Lübeck, Lübeck, Germany
* Correspondence to: Dr K. Jahnke, Department of Haematology, Oncology and Transfusion Medicine, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, D-12200 Berlin, Germany. Tel: +49-30-8445-2337; Fax: +49-30-8445-4468; E-mail: kristoph.jahnke{at}charite.de
Background: The prognosis of intraocular lymphoma (IOL) is poor, and the optimal treatment has not yet been defined. The study assesses ifosfamide (IFO) and trofosfamide (TRO) for treating IOL.
Patients and methods: We prospectively evaluated the efficacy and aqueous penetration of intravenous IFO, oral TRO and their active 4-hydroxy (4-OH) metabolites in 10 patients with IOL. Doses varied from 1500 to 2000 mg/m2/day on days 13 for IFO and from 150 to 400 mg/day (continuous or intermittent administration) for TRO. Four patients had newly diagnosed disease, and six had relapsed after pretreatment.
Results: All patients responded to first treatment with IFO or TRO, and both of two patients responded to re-treatment with IFO on ocular relapse. Progression-free survival from the first treatment with IFO or TRO was
618 months. In six of six patients, 4-OH metabolites were detected in the aqueous humor at a concentration of 0.321.56 µM immediately after IFO infusion with an aqueous/serum ratio of 0.190.54. 4-OH metabolites could be detected in one of three patients at a concentration of 7.2 µM 316 h after ingestion of TRO.
Conclusions: IFO and TRO are active in IOL. IOL patients evidence aqueous penetration of 4-OH metabolites after intravenous administration of IFO.
Key words: aqueous, ifosfamide, intraocular lymphoma, trofosfamide
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